mirror of
https://github.com/pgpainless/pgpainless.git
synced 2025-09-09 10:19:39 +02:00
Remove unused SignatureValidator methods
This commit is contained in:
parent
cb7c61cf10
commit
2c1d89a249
GPG key ID:
62BEE9264BF17311
1 changed files with 0 additions and 472 deletions
|
|
@ -7,23 +7,12 @@ package org.pgpainless.signature.consumer
|
|||
import java.util.Date
|
||||
import openpgp.formatUTC
|
||||
import openpgp.openPgpKeyId
|
||||
import org.bouncycastle.openpgp.PGPException
|
||||
import org.bouncycastle.openpgp.PGPPublicKey
|
||||
import org.bouncycastle.openpgp.PGPSignature
|
||||
import org.bouncycastle.openpgp.PGPUserAttributeSubpacketVector
|
||||
import org.bouncycastle.openpgp.api.OpenPGPImplementation
|
||||
import org.pgpainless.algorithm.SignatureSubpacket
|
||||
import org.pgpainless.algorithm.SignatureType
|
||||
import org.pgpainless.bouncycastle.extensions.fingerprint
|
||||
import org.pgpainless.bouncycastle.extensions.isOfType
|
||||
import org.pgpainless.bouncycastle.extensions.publicKeyAlgorithm
|
||||
import org.pgpainless.bouncycastle.extensions.signatureExpirationDate
|
||||
import org.pgpainless.bouncycastle.extensions.signatureHashAlgorithm
|
||||
import org.pgpainless.exception.SignatureValidationException
|
||||
import org.pgpainless.key.OpenPgpFingerprint
|
||||
import org.pgpainless.policy.Policy
|
||||
import org.pgpainless.signature.subpackets.SignatureSubpacketsUtil
|
||||
import org.pgpainless.util.NotationRegistry
|
||||
|
||||
abstract class SignatureValidator {
|
||||
|
||||
|
|
@ -72,467 +61,6 @@ abstract class SignatureValidator {
|
|||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature has an acceptable structure.
|
||||
*
|
||||
* @param signingKey signing key
|
||||
* @param policy policy
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signatureStructureIsAcceptable(
|
||||
signingKey: PGPPublicKey,
|
||||
policy: Policy
|
||||
): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
signatureIsNotMalformed(signingKey).verify(signature)
|
||||
if (signature.version >= 4) {
|
||||
signatureDoesNotHaveCriticalUnknownNotations(policy.notationRegistry)
|
||||
.verify(signature)
|
||||
signatureDoesNotHaveCriticalUnknownSubpackets().verify(signature)
|
||||
}
|
||||
signatureUsesAcceptableHashAlgorithm(policy).verify(signature)
|
||||
signatureUsesAcceptablePublicKeyAlgorithm(policy, signingKey).verify(signature)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature was made using an acceptable [PublicKeyAlgorithm].
|
||||
*
|
||||
* @param policy policy
|
||||
* @param signingKey signing key
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signatureUsesAcceptablePublicKeyAlgorithm(
|
||||
policy: Policy,
|
||||
signingKey: PGPPublicKey
|
||||
): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
if (signingKey.bitStrength == -1) {
|
||||
throw SignatureValidationException(
|
||||
"Cannot determine bit strength of signing key.")
|
||||
}
|
||||
if (!policy.publicKeyAlgorithmPolicy.isAcceptable(
|
||||
signingKey.publicKeyAlgorithm, signingKey.bitStrength)) {
|
||||
throw SignatureValidationException(
|
||||
"Signature was made using unacceptable key. " +
|
||||
"${signingKey.publicKeyAlgorithm} (${signingKey.bitStrength} bits) is " +
|
||||
"not acceptable according to the public key algorithm policy.")
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@JvmStatic
|
||||
fun signatureUsesAcceptableHashAlgorithm(policy: Policy): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
try {
|
||||
val algorithmPolicy = getHashAlgorithmPolicyForSignature(signature, policy)
|
||||
if (!algorithmPolicy.isAcceptable(
|
||||
signature.signatureHashAlgorithm, signature.creationTime)) {
|
||||
throw SignatureValidationException(
|
||||
"Signature uses unacceptable" +
|
||||
" hash algorithm ${signature.signatureHashAlgorithm}" +
|
||||
" (Signature creation time: ${signature.creationTime.formatUTC()})")
|
||||
}
|
||||
} catch (e: NoSuchElementException) {
|
||||
throw SignatureValidationException(
|
||||
"Signature uses unknown hash" + " algorithm ${signature.hashAlgorithm}")
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Return the applicable [Policy.HashAlgorithmPolicy] for the given [PGPSignature].
|
||||
* Revocation signatures are being policed using a different policy than non-revocation
|
||||
* signatures.
|
||||
*
|
||||
* @param signature signature
|
||||
* @param policy revocation policy for revocation sigs, normal policy for non-rev sigs
|
||||
* @return policy
|
||||
*/
|
||||
@JvmStatic
|
||||
private fun getHashAlgorithmPolicyForSignature(
|
||||
signature: PGPSignature,
|
||||
policy: Policy
|
||||
): Policy.HashAlgorithmPolicy {
|
||||
return when (SignatureType.fromCode(signature.signatureType)) {
|
||||
null -> policy.certificationSignatureHashAlgorithmPolicy
|
||||
SignatureType.CERTIFICATION_REVOCATION,
|
||||
SignatureType.KEY_REVOCATION,
|
||||
SignatureType.SUBKEY_REVOCATION -> policy.revocationSignatureHashAlgorithmPolicy
|
||||
SignatureType.GENERIC_CERTIFICATION,
|
||||
SignatureType.NO_CERTIFICATION,
|
||||
SignatureType.CASUAL_CERTIFICATION,
|
||||
SignatureType.POSITIVE_CERTIFICATION,
|
||||
SignatureType.DIRECT_KEY,
|
||||
SignatureType.SUBKEY_BINDING,
|
||||
SignatureType.PRIMARYKEY_BINDING -> policy.certificationSignatureHashAlgorithmPolicy
|
||||
else -> policy.dataSignatureHashAlgorithmPolicy
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature does not carry critical unknown notations.
|
||||
*
|
||||
* @param registry notation registry of known notations
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signatureDoesNotHaveCriticalUnknownNotations(
|
||||
registry: NotationRegistry
|
||||
): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
SignatureSubpacketsUtil.getHashedNotationData(signature)
|
||||
.filter { it.isCritical && !registry.isKnownNotation(it.notationName) }
|
||||
.forEach {
|
||||
throw SignatureValidationException(
|
||||
"Signature contains unknown critical notation '${it.notationName}' in its hashed area.")
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature does not contain critical unknown subpackets.
|
||||
*
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signatureDoesNotHaveCriticalUnknownSubpackets(): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
signature.hashedSubPackets.criticalTags.forEach {
|
||||
try {
|
||||
SignatureSubpacket.requireFromCode(it)
|
||||
} catch (e: NoSuchElementException) {
|
||||
throw SignatureValidationException(
|
||||
"Signature contains unknown critical subpacket of type 0x${Integer.toHexString(it)}")
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature is effective at the given reference date.
|
||||
*
|
||||
* @param referenceTime reference date for signature verification
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
@JvmOverloads
|
||||
fun signatureIsEffective(referenceTime: Date = Date()): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
signatureIsAlreadyEffective(referenceTime).verify(signature)
|
||||
signatureIsNotYetExpired(referenceTime).verify(signature)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature was created prior to the given reference date.
|
||||
*
|
||||
* @param referenceTime reference date for signature verification
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signatureIsAlreadyEffective(referenceTime: Date): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
if (signature.isHardRevocation) {
|
||||
return
|
||||
}
|
||||
if (signature.creationTime > referenceTime) {
|
||||
throw SignatureValidationException(
|
||||
"Signature was created at ${signature.creationTime.formatUTC()} and" +
|
||||
" is therefore not yet valid at ${referenceTime.formatUTC()}")
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature is not yet expired.
|
||||
*
|
||||
* @param referenceTime reference date for signature verification
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signatureIsNotYetExpired(referenceTime: Date): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
if (signature.isHardRevocation) {
|
||||
return
|
||||
}
|
||||
val expirationDate = signature.signatureExpirationDate
|
||||
if (expirationDate != null && expirationDate < referenceTime) {
|
||||
throw SignatureValidationException(
|
||||
"Signature is already expired " +
|
||||
"(expiration: ${expirationDate.formatUTC()}," +
|
||||
" validation: ${referenceTime.formatUTC()})")
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature is not malformed. A signature is malformed if it has no hashed
|
||||
* creation time subpacket, it predates the creation time of the signing key, or it predates
|
||||
* the creation date of the signing key binding signature.
|
||||
*
|
||||
* @param signingKey signing key
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signatureIsNotMalformed(signingKey: PGPPublicKey): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
if (signature.version >= 4) {
|
||||
signatureHasHashedCreationTime().verify(signature)
|
||||
}
|
||||
signatureDoesNotPredateSigningKey(signingKey).verify(signature)
|
||||
if (!signature.isOfType(SignatureType.PRIMARYKEY_BINDING)) {
|
||||
signatureDoesNotPredateSigningKeyBindingDate(signingKey).verify(signature)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@JvmStatic
|
||||
fun signatureDoesNotPredateSignee(signee: PGPPublicKey): SignatureValidator {
|
||||
return signatureDoesNotPredateKeyCreation(signee)
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature does not predate the creation time of the signing key.
|
||||
*
|
||||
* @param key signing key
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signatureDoesNotPredateSigningKey(signingKey: PGPPublicKey): SignatureValidator {
|
||||
return signatureDoesNotPredateKeyCreation(signingKey)
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature does not predate the creation time of the given key.
|
||||
*
|
||||
* @param key key
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signatureDoesNotPredateKeyCreation(key: PGPPublicKey): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
if (key.creationTime > signature.creationTime) {
|
||||
throw SignatureValidationException(
|
||||
"Signature predates key" +
|
||||
" (key creation: ${key.creationTime.formatUTC()}," +
|
||||
" signature creation: ${signature.creationTime.formatUTC()})")
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature has a hashed creation time subpacket.
|
||||
*
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signatureHasHashedCreationTime(): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
if (SignatureSubpacketsUtil.getSignatureCreationTime(signature) == null) {
|
||||
throw SignatureValidationException(
|
||||
"Malformed signature." +
|
||||
"Signature has no signature creation time subpacket in its hashed area.")
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature does not predate the binding date of the signing key.
|
||||
*
|
||||
* @param signingKey signing key
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signatureDoesNotPredateSigningKeyBindingDate(
|
||||
signingKey: PGPPublicKey
|
||||
): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
if (signingKey.isMasterKey) {
|
||||
return
|
||||
}
|
||||
if (signingKey
|
||||
.getSignaturesOfType(SignatureType.SUBKEY_BINDING.code)
|
||||
.asSequence()
|
||||
.map {
|
||||
if (signature.creationTime < it.creationTime) {
|
||||
throw SignatureValidationException(
|
||||
"Signature was created " +
|
||||
"before the signing key was bound to the certificate.")
|
||||
}
|
||||
}
|
||||
.none()) {
|
||||
throw SignatureValidationException(
|
||||
"Signing subkey does not have a subkey binding signature.")
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a direct-key signature is correct.
|
||||
*
|
||||
* @param signingKey signing key
|
||||
* @param signedKey signed key
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun correctSignatureOverKey(
|
||||
signingKey: PGPPublicKey,
|
||||
signedKey: PGPPublicKey
|
||||
): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
try {
|
||||
signature.init(
|
||||
OpenPGPImplementation.getInstance().pgpContentVerifierBuilderProvider(),
|
||||
signingKey)
|
||||
val valid =
|
||||
if (signingKey.keyID == signedKey.keyID ||
|
||||
signature.isOfType(SignatureType.DIRECT_KEY)) {
|
||||
signature.verifyCertification(signedKey)
|
||||
} else {
|
||||
signature.verifyCertification(signingKey, signedKey)
|
||||
}
|
||||
if (!valid) {
|
||||
throw SignatureValidationException("Signature is not correct.")
|
||||
}
|
||||
} catch (e: PGPException) {
|
||||
throw SignatureValidationException(
|
||||
"Cannot verify direct-key signature correctness", e)
|
||||
} catch (e: ClassCastException) {
|
||||
throw SignatureValidationException(
|
||||
"Cannot verify direct-key signature correctness", e)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@JvmStatic
|
||||
fun signatureIsCertification(): SignatureValidator {
|
||||
return signatureIsOfType(
|
||||
SignatureType.POSITIVE_CERTIFICATION,
|
||||
SignatureType.CASUAL_CERTIFICATION,
|
||||
SignatureType.GENERIC_CERTIFICATION,
|
||||
SignatureType.NO_CERTIFICATION)
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature type equals one of the given [SignatureType].
|
||||
*
|
||||
* @param signatureType one or more signature types
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun signatureIsOfType(vararg signatureType: SignatureType): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
if (signatureType.none { signature.isOfType(it) }) {
|
||||
throw SignatureValidationException(
|
||||
"Signature is of type" +
|
||||
" ${SignatureType.fromCode(signature.signatureType) ?:
|
||||
("0x" + signature.signatureType.toString(16))}, " +
|
||||
"while only ${signatureType.contentToString()} are allowed here.")
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature over a user-id is correct.
|
||||
*
|
||||
* @param userId user-id
|
||||
* @param certifiedKey key carrying the user-id
|
||||
* @param certifyingKey key that created the signature.
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun correctSignatureOverUserId(
|
||||
userId: CharSequence,
|
||||
certifiedKey: PGPPublicKey,
|
||||
certifyingKey: PGPPublicKey
|
||||
): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
try {
|
||||
signature.init(
|
||||
OpenPGPImplementation.getInstance().pgpContentVerifierBuilderProvider(),
|
||||
certifyingKey)
|
||||
if (!signature.verifyCertification(userId.toString(), certifiedKey)) {
|
||||
throw SignatureValidationException(
|
||||
"Signature over user-id '$userId' is not valid.")
|
||||
}
|
||||
} catch (e: PGPException) {
|
||||
throw SignatureValidationException(
|
||||
"Cannot verify signature over user-id '$userId'.", e)
|
||||
} catch (e: ClassCastException) {
|
||||
throw SignatureValidationException(
|
||||
"Cannot verify signature over user-id '$userId'.", e)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Verify that a signature over a user-attribute packet is correct.
|
||||
*
|
||||
* @param userAttributes user attributes
|
||||
* @param certifiedKey key carrying the user-attributes
|
||||
* @param certifyingKey key that created the certification signature
|
||||
* @return validator
|
||||
*/
|
||||
@JvmStatic
|
||||
fun correctSignatureOverUserAttributes(
|
||||
userAttributes: PGPUserAttributeSubpacketVector,
|
||||
certifiedKey: PGPPublicKey,
|
||||
certifyingKey: PGPPublicKey
|
||||
): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
override fun verify(signature: PGPSignature) {
|
||||
try {
|
||||
signature.init(
|
||||
OpenPGPImplementation.getInstance().pgpContentVerifierBuilderProvider(),
|
||||
certifyingKey)
|
||||
if (!signature.verifyCertification(userAttributes, certifiedKey)) {
|
||||
throw SignatureValidationException(
|
||||
"Signature over user-attributes is not correct.")
|
||||
}
|
||||
} catch (e: PGPException) {
|
||||
throw SignatureValidationException(
|
||||
"Cannot verify signature over user-attribute vector.", e)
|
||||
} catch (e: ClassCastException) {
|
||||
throw SignatureValidationException(
|
||||
"Cannot verify signature over user-attribute vector.", e)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@JvmStatic
|
||||
fun signatureWasCreatedInBounds(notBefore: Date?, notAfter: Date?): SignatureValidator {
|
||||
return object : SignatureValidator() {
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue